Long-Term Debt and Finance Lease Obligations - Credit Agreement (Details) - Line of Credit - Revolving Credit Facility $ in Millions	6 Months Ended
Jun. 30, 2021 USD ($)
CVR Partners \| Asset Based (Nitrogen Fertilizer ABL) Credit Agreement
Line of Credit Facility [Line Items]
Total Available Borrowing Capacity	$ 32
Amount Borrowed	0
Outstanding Letters of Credit	0
Available Capacity	$ 32
CVR Partners \| Asset Based (Nitrogen Fertilizer ABL) Credit Agreement \| LIBOR \| Quarterly Excess Availability Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
CVR Partners \| Asset Based (Nitrogen Fertilizer ABL) Credit Agreement \| LIBOR \| Quarterly Excess Availability Not Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
CVR Partners \| Asset Based (Nitrogen Fertilizer ABL) Credit Agreement \| Base Rate \| Quarterly Excess Availability Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
CVR Partners \| Asset Based (Nitrogen Fertilizer ABL) Credit Agreement \| Base Rate \| Quarterly Excess Availability Not Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
CVR Refining \| Amended and Restated Asset Based (Petroleum ABL) Credit Agreement
Line of Credit Facility [Line Items]
Total Available Borrowing Capacity	$ 400
Amount Borrowed	0
Outstanding Letters of Credit	36
Available Capacity	$ 364
CVR Refining \| Amended and Restated Asset Based (Petroleum ABL) Credit Agreement \| LIBOR \| Quarterly Excess Availability Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
CVR Refining \| Amended and Restated Asset Based (Petroleum ABL) Credit Agreement \| LIBOR \| Quarterly Excess Availability Not Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
CVR Refining \| Amended and Restated Asset Based (Petroleum ABL) Credit Agreement \| Base Rate \| Quarterly Excess Availability Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
CVR Refining \| Amended and Restated Asset Based (Petroleum ABL) Credit Agreement \| Base Rate \| Quarterly Excess Availability Not Greater Than 50%
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.75%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

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